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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright (c) 2013-2018 Linaro Limited
* Copyright (c) 2019-2021 Nokia
*/
/**
* @file
*
* ODP buffer descriptor - implementation internal
*/
#ifndef ODP_BUFFER_INTERNAL_H_
#define ODP_BUFFER_INTERNAL_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <odp/api/std_types.h>
#include <odp/api/atomic.h>
#include <odp/api/pool.h>
#include <odp/api/buffer.h>
#include <odp/api/debug.h>
#include <odp/api/align.h>
#include <odp_config_internal.h>
#include <odp/api/byteorder.h>
#include <odp/api/thread.h>
#include <odp/api/event.h>
#include <odp_event_internal.h>
#include <stddef.h>
/* Internal buffer header */
typedef struct ODP_ALIGNED_CACHE odp_buffer_hdr_t {
/* Common event header */
_odp_event_hdr_t event_hdr;
/* User area pointer */
void *uarea_addr;
/* Data */
uint8_t data[];
} odp_buffer_hdr_t;
/* Buffer header size is critical for performance. Ensure that it does not accidentally
* grow over cache line size. Note that ODP_ALIGNED_CACHE rounds up struct size to a multiple of
* ODP_CACHE_LINE_SIZE. */
ODP_STATIC_ASSERT(sizeof(odp_buffer_hdr_t) <= ODP_CACHE_LINE_SIZE, "BUFFER_HDR_SIZE_ERROR");
static inline odp_buffer_hdr_t *_odp_buf_hdr(odp_buffer_t buf)
{
return (odp_buffer_hdr_t *)(uintptr_t)buf;
}
static inline void _odp_buffer_subtype_set(odp_buffer_t buffer, int subtype)
{
odp_buffer_hdr_t *buf_hdr = _odp_buf_hdr(buffer);
buf_hdr->event_hdr.subtype = subtype;
}
#ifdef __cplusplus
}
#endif
#endif
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